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  • Mx
    Mx
    maxwell; maxwells.
  • MX
    MX
    missile experimental: a ten-warhead U.S. intercontinental ballistic missile.
  • Mx.
    Mx.
    a title of respect prefixed to a person's surname: unlike Mr., Mrs., or Ms., it does not indicate gender and may be used by a person with any or no specific gender identity.
  • mx
    mx
    abbreviation
    Mexico
Synonyms

Mx

1 American  
Electricity.
  1. maxwell; maxwells.


MX 2 American  
  1. missile experimental: a ten-warhead U.S. intercontinental ballistic missile.

  2. motocross.


Mx. 3 American  
[miks, muhks] / mɪks, mʌks /
  1. a title of respect prefixed to a person's surname: unlike Mr., Mrs., or Ms., it does not indicate gender and may be used by a person with any or no specific gender identity.


MX 1 British  

abbreviation

  1. missile-experimental: an intercontinental ballistic missile with up to ten nuclear warheads

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Mx 2 British  

symbol

  1. maxwell

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

mx 3 British  

abbreviation

  1. Mexico

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of MX2

First recorded in 1970–75; by abbreviation

Origin of Mx.3

First recorded in 1975–80; M (as in Mr./Mrs./Ms. ) + x (symbol for an unknown quantity, person, or thing)

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

At an earlier hearing, the court heard how Castellucci, a cyber security expert from California, uses the title "Mx" and refers to themselves using they/them pronouns.

From BBC Feb. 25, 2025

"They both prefer offshore deeper waters, so it's quite unusual to spot them close to land," said Mx Cowen who uses "they" and "them" as personal pronouns.

From BBC Jan. 9, 2025

Now aged 26, Mx Sharman has donated three times and shares their egg donation journey on TikTok.

From BBC Aug. 7, 2024

The combination of bones in the eye socket gave it a “bug-eyed appearance” like Kermit’s, and its slightly crushed, three-centimer-long fossilized skull appeared to have “a lopsided smile,” reminiscent of Kermit’s shy grin, Mx.

From New York Times Mar. 21, 2024

At, feeler; Mn, mandible; Mx, maxilla; Lm, labium, spinneret projecting beyond it.

From The Life-Story of Insects by George H. (George Herbert) Carpenter

In Liga MX, the club has been at the forefront of tapping into the Mexican diaspora in the U.S.

From Los Angeles Times Jun. 30, 2026

In December, he moved to storied Liga MX club Chivas, his childhood team.

From Los Angeles Times Jun. 30, 2026

“Liga MX was the most-watched soccer league on U.S. television in 2025,” according to a recent Nielsen report, ahead of American Major League Soccer and the European Premier League.

From Barron's Jun. 11, 2026

Now, Polymarket has secured an exclusive partnership with Liga MX, North America’s most popular soccer league.

From Barron's Jun. 11, 2026

MIRVs, which encompassed the land-based MX missile program, were the ultimate product of Livermore’s long quest for a high-yield, low-weight nuclear device.

From "Big Science" by Michael Hiltzik

Last month, she won an invitation-only competition at Queer/Bar, The Final Girls, and June 16 marked her first performance as a regular cast member of the bar’s Mx. show.

From Seattle Times Jun. 24, 2023

“The flood of Mr., Ms., Mx. or Mrs. in sentences can slow down readers’ enjoyment of our writing,” she wrote.

From New York Times May 25, 2023

“Anderson Aldrich is nonbinary. They use they/them pronouns, and for the purposes of all formal fillings, will be addressed as Mx. Aldrich,” the attorneys said in a footnote on the filing.

From Washington Times Nov. 23, 2022

"Anderson Aldrich is non-binary. They use they/them pronouns, and for the purposes of all formal filings, will be addressed as Mx. Aldrich," a footnote in a court filing reads by their defense team.

From Salon Nov. 23, 2022

“Maybe we should let Mx. Desi know that there’s a flying fire type outside their door?”

From "A Bird Will Soar" by Alison Green Myers

The slope-intercept form of a linear equation is y = mx + b.

From Textbooks May 6, 2020

Algebraically, a linear equation typically takes the form y = mx + b, where m and b are constants, x is the independent variable, and y is the dependent variable.

From Textbooks Mar. 27, 2020

The line of best fit is represented as y = mx + b .

From Textbooks Mar. 27, 2020

Algebraically, a linear equation typically takes the form y = mx + b, where m and b are constants, x is the independent variable, y is the dependent variable.

From Textbooks Sep. 19, 2013

Take, for instance, the equation y = mx, where m is a given constant.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 "Geodesy" to "Geometry" by Various

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